Bump symfony/event-dispatcher from 4.4.10 to 4.4.11

Bumps [symfony/event-dispatcher](https://github.com/symfony/event-dispatcher) from 4.4.10 to 4.4.11.
- [Release notes](https://github.com/symfony/event-dispatcher/releases)
- [Changelog](https://github.com/symfony/event-dispatcher/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/event-dispatcher/compare/v4.4.10...v4.4.11)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.lock

@@ -5084,16 +5084,16 @@
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v4.4.10",
+            "version": "v4.4.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "a5370aaa7807c7a439b21386661ffccf3dff2866"
+                "reference": "6140fc7047dafc5abbe84ba16a34a86c0b0229b8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/a5370aaa7807c7a439b21386661ffccf3dff2866",
-                "reference": "a5370aaa7807c7a439b21386661ffccf3dff2866",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/6140fc7047dafc5abbe84ba16a34a86c0b0229b8",
+                "reference": "6140fc7047dafc5abbe84ba16a34a86c0b0229b8",
                 "shasum": ""
             },
             "require": {
@@ -5164,7 +5164,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-05-20T08:37:50+00:00"
+            "time": "2020-06-18T17:59:13+00:00"
         },
         {
             "name": "symfony/event-dispatcher-contracts",